Study of 0(+) excitations in Gd-158 with the (n,n ' gamma) reaction

S. R. Lesher, J. N. Orce, Z. Ammar, C. D. Hannant, M. Merrick, N. Warr, T. B. Brown, N. Boukharouba, C. Fransen, M. Scheck, M.T. McEllistrem, S.W. Yates

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11 Citations (Scopus)

Abstract

We have examined 158Gdwith the (n,n′γ) reaction at neutron energies up to 3.3 MeV to determine the collective character of 0+excitations revealed in previous 160Gd(p, t) reaction studies. Moderately large B(E2;0+→2+1) values are observed for transitions from some of the 0+ states lying above the pairing gap. From its excitation energy and decay properties, the 0+ excitation at 2276.7 keV is suggested as exhibiting two-phonon γγ strength. The high density of levels at similar excitation energies makes the identification of the other two-phonon states improbable.
Original languageEnglish
Article number034318
JournalPhysical Review C
Volume76
Issue number3
DOIs
Publication statusPublished - Sep 2007
Externally publishedYes

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